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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
NO
YES
Check the MD
YES
Check the related circuit of SLED
and Motor driver IC ( IC401)
YES
Check the cable connection
with MECHA.
Do not put in disc and
tray close.
Does the
SLED move to inner side
when it is at outer
position?
YESYES
Motor Drive
DRV_MUTE pin
is high?
YES
YES
SLED signal is OK?
NO
NO
Check Focus connection on
ES8390 and motor driver IC.
Check cable connection
with pick-up head.
Optical
Lens is moving
for searching Focus?
YESYES
Proper
Focus outputs
to motor driver?
NO
Check the motor driver (IC401).
YES
Proper F+ & F-outputs?
A
B
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